What other factors can propel a CEX growth?
I will never believe in such reports as CEX in the past are know to use bots to increase volume. The most important factor will always be security as it has been a concern with CEX. Although there have hacks in CEX in the past the current environment with such issue is stable as we haven't heard of any hacks for quite sometime now.
It's easy to validate these type of accusations about fake bot trading activities when there's no corresponding growth for the cex. But in the case of bitget for instance, I think they shown growth in all areas. From Twitter followers, to daily volume, I've followed their progress and seen impressive statistical increases across board